You can also use your mouse to drag the image from side to side – you can stitch lots of images together to create a truly humongous image that you can drag through using Deep Zoom Composer.

In order to use the Seadragon control, you need to (1) Create the image (2) Add the Seadragon control to a page. James Senior has created a great video quick start that demonstrates how you can use the Seadragon control for the Channel9 website: